EPA, Mystic River Watershed Association using new, segmented grading system for water quality

The U.S. Environmental Protection Agency (EPA) and Mystic River Watershed Association (MyRWA) have introduced a new water quality analysis for the Mystic River Watershed, providing grades for 14 segments of the river and its tributaries instead of one for the entire watershed.

“[This new grading system] illustrates that recreational boating in both the salt and fresh water sections of the Mystic River is safe nearly all the time and that swimming in the Mystic Lakes is highly recommended,” said MyRWA Executive Director EkOngKar Singh Khalsa. “We hope this new data will inspire many more people to enjoy this valuable natural resource and encourage further investment in the protection and restoration of the local natural environment.”

The new system has allowed for more clarity on water conditions, which are good on a regular basis for the main stem of the river and for Upper and Lower Mystic lakes, but generally poor in many urban tributaries.

“Grading the watershed by segments provides the public with a more accurate assessment of local water quality conditions and greater transparency for all stakeholders,” EPA New England Office Regional Administrator Curt Spalding said. “It also helps EPA, MyRWA and other agencies to focus our efforts on the segments with lower water quality.”